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Showing 1–6 of 6 results
Advanced filters: Author: Dan Gammon Clear advanced filters

  • Using a long-lived quantum-dot spin qubit coupled to a GaAs-based photonic crystal cavity, researchers demonstrate complete quantum control of an electron spin qubit. By cleverly controlling the charge state of the InAs quantum dot using laser pulses, optical initialization, control and readout of an electron spin are achieved.

    • Samuel G. Carter
    • Timothy M. Sweeney
    • Daniel Gammon
    Research
    Nature Photonics
    Volume: 7, P: 329-334

  • A quantum dot is usually charged by inserting electrons. But electrons can also be removed from a neutral dot. Unexpectedly, positively charged dots are different from highly charged negative ones, which have their own peculiarities.

    • Dan Gammon
    News & Views
    Nature Physics
    Volume: 3, P: 761-762

  • Coherent population trapping is a process by which a particle is induced to exist in a superposition of two ground states. This has now been demonstrated for an electron spin on a single quantum dot, which could prove useful in a variety of photonic and information-processing applications.

    • Xiaodong Xu
    • Bo Sun
    • L. J. Sham
    Research
    Nature Physics
    Volume: 4, P: 692-695

  • Studies of the genetic association between vitamin D and cancer risk have typically been underpowered. Here the authors analyse this using Mendelian Randomisation with more than 70 vitamin D variants obtained from the UK Biobank and large-scale data from various consortia, confirming null associations between vitamin D and most cancers.

    • Jue-Sheng Ong
    • Suzanne C. Dixon-Suen
    • Stuart MacGregor
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-10

  • A phase 2 proof-of-mechanism trial shows that a κ-opioid receptor antagonist improves reward-related functioning in the brain and a clinical measure of anhedonia in patients with mood and anxiety disorders, serving as a model for implementing the ‘fast-fail’ approach to psychiatric treatment development.

    • Andrew D. Krystal
    • Diego A. Pizzagalli
    • William Z. Potter
    Research
    Nature Medicine
    Volume: 26, P: 760-768